Display Device Insulating Layer Outgassing Reduction
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Solution Overview
Problem
Display devices face issues with outgassing due to the presence of insulating layers, which can lead to deterioration and reliability problems.
Innovation Solution
The display device design includes removing portions of the insulating layers between pixel electrodes and data lines, reducing the volume occupied by these layers and minimizing outgassing, while maintaining the necessary insulation and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If insulating layers are used to isolate wires, then insulation is ensured, but outgassing occurs leading to deterioration
Solution Approach 1:
The patent removes portions of the insulating layers (first and second insulating layers) in specific regions to eliminate the source of outgassing. By extracting the harmful insulating material that causes outgassing while maintaining insulation where needed, the device reliability is improved without the detrimental effects of outgassing
Solution Approach 2:
The patent applies different structural configurations to different regions of the device. Insulating layers are present in some areas to provide insulation, while removed in other areas to prevent outgassing. This localized differentiation allows the device to achieve both insulation and outgassing prevention in appropriate regions
2Object-generated harmful factors
If insulating layers are removed to minimize outgassing, then outgassing is reduced, but insulation may be compromised
Solution Approach 1:
The insulating structure is segmented into different regions: areas where insulating layers are removed to minimize outgassing, and areas where insulating layers are maintained to ensure proper wire isolation. This segmentation allows simultaneous achievement of outgassing reduction and insulation integrity
Solution Approach 2:
Different regions of the device have different insulating layer configurations tailored to their specific functional requirements. Critical insulation areas maintain full insulating layers, while non-critical areas have removed portions to reduce outgassing, achieving both goals locally
Data Source
AI summary
An exemplary embodiment of the present inventive concept provides a display device including: a substrate; a plurality of first wires extending along a first direction on the substrate; a first insulating layer disposed on the plurality of first wires; a plurality of second wires disposed on the first insulating layer and extending along a second direction crossing the first direction; a second insulating layer disposed on the plurality of second wires; and a plurality of pixel electrodes disposed on the second insulating layer, wherein the second insulating layer includes a first opening which is disposed between the plurality of pixel electrodes.